Spring operated fastener applying device



March 9, 1954 M. ABRAMS SPRING OPERATED FASTENER APPLYING DEVICE '3 Sheets-Sheet 1 Filed Aug. 12, 1952 mm .mm em. b LT Mb 0m ,1

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March 9, 1954 M. ABRAMS SPRING OPERATED FASTENER APPLYING DEVICE 5 Sheets-Sheet 5 Filed Aug 12, 1952 lilid ill 'Zmventor MORRIS ABRAMS (Ittorneg Patented Mar. 9, 1954 UNITED ssrsm orsics FASTENER APPLYING D VICE Morris Abrams, New York, N. Y., assignor to Arrow Fastener 00., 1110., Brooklyn, N. Y., a

SPRING (JP-ERNIE};E

corporation of New York "Ihe present invention relates to spring; operated, type staplers. tackers and similar devices.

Generally, devices of this character comprise a body, an operating handle pivoted to the body, a spring pressed driver blade which is actuated and abruptly released by movement of the handle, and a staple magazine mounted in the body for feeding staples to be driven by the driver blades.

An object of this invention is to provide improved mechanism for actuation of the driver blade by the operating handle.

A further object of the invention is to provide a mechanism of this character in which the staple driving movement of the spring pressed driver blade is obtained by an improved system of linkage actuated by the operating handle.

Another object of the invention is to provide improved stop means for limiting the travel of the driver blade after a staple has been driven.

Still another object of the invention is the provision of improved stop means of this character in which one of the stop members may conveniently be hardened to obtain longer wear without hardening the entire body of the device.

Yet another object of this invention is to provide a tacker of the character described so constructed as to obtain good leverage with small handle movement and in which the links. and levers interconnecting the handle with the plunger operated member do not include any links or levers that are too long but which are of strong and rugged construction and which will withstand continued use for long periods Still another object of this invention is to provide a tacker of the character described, so ccnstructed that when the handle goes down, a trig-' ger is powered to pull upwardly on a plunger, the design being such that the trigger will leave the plunger at a predetermined point and a spring will depress the plunger. On the way down the plunger pushes the trigger back so as to by-pass the trigger. Spring means are provided to push the trigger forwardly to reengage the plunger. When the handle is released, the trigger comes down and is cammed backward to bypass the plunger. The trigger has a kidney shaped hole through which the pivot for the trigger passes, the hole being so arranged so as to keep the trigger in its forward position except when the trigger has to go back as it is cammed to by-pass the plunger.

Yet another object of this invention is to pro vide a backer of the character described, provided with a hardened front cover formed with slots in its front wall and a staple magazine hav- 2 ins lug at its front and received in said slots to aid in supporting the front end of the magazine and to wit stand. continual p unding each time the plunger descends on the spring action.

Still another object of this invention is to provide a strong, rugged, durable and compact tacker of the character described, which shall be relatively inexpensive to manufacture, easy to, assemble, which shall be easy to. manipulate. and yet practical and eiiicient to a high degree in use.

Still a further object of this invention is, to provide a tacker of the character described in which the nosepiece has apertured ears serving as bearings for the pin on which the lever of the plunger actuating mechanism is mounted. The nose piece may be hardened thereby supplying long wearing bearings for said pivot pin.

Yetv another object of this invention is to provide in a device of the character described, a body open at its lower end, a staple magazine mounted in the bottom of the body and pivoted at its rear end on a pin removably mounted on the body, and said staple magazine having forwardly projecting lugs at its front end received in slots in the front wall of the front nosepiece. With such construction. removal of said pivot pin will permit the entire staple magazine to be readily withdrawn from the tacker upon merely moving the staple magazine rearwardly sufficiently to disengage said lugs from, said slots.

Yet a further object of this invention is to provide in a tacker of the character described, a shock absorber riveted to the underside of the handle, said shock absorber comprising a rectangular pad of rubber-like material and a rectangular plate at the underside of said pad, the arrangement being such that upon depressing the handle, said rectangular plate will contact the top edges of the body of the tacker to serve as a shock absorbing stop for the handle.

Other and further objects will become apparent upon reading the following specification together with the accompanying drawing forming a part hereof.

The invention accordingly consists in the features of construction, combinations of elements,

arrangement of parts, which will be exemplified in the construction hereinafter described, and of which the scope of invention will be indicated in the following claims.

In the drawings:

Fig. l is a side elevational view of an embodiment of the invention, partly broken away, with operating handle in its normal position;

Fig. 2 is a fragmentary view similar to Fig. 1, showing the operating handle partially depressed 3 just before release of the spring pressed driver blade;

Fig. 3 is a fragmentary view similar to Figs. 1 and 2 showing the staple driving mechanism just before the operating handle reaches its fully raised position;

Fig. 4 is an end sectional view taken along the line 44 of Fig. 1, looking in the direction of the arrows;

Fig. 5 is a plan sectional view taken along the line 55 of Fig. 2;

Fig. 6 is a plan sectional view taken along the line 6-6 of Fig. 1;

Fig. '7 is a plan sectional view taken along the line !-1 of Fig. 12;

Figs. 8, 9, 10 and 11 are sectional views of the linkage mechanism taken along the lines 9 9; I 0Iii; and Ii-Il of Fig. 1, in each instance looking in the direction of the arrows;

Fig. 12 is a fragmentary side elevational view partly broken away;

Fig. 13 is an end view, partly broken away;

Fig. 14 is a side elevational view of a tacker embodying the invention and illustrating a modified construction;

Fig. 15 is a cross sectional view taken on the line I5|5 of Fig. 14;

Fig. 1G is a cross sectional view taken on the line |6--IB of Fig. 14;

Fig. 17 is a cross sectional view taken on the line |I--|'| of Fig. 14;

Fig. 18 is a cross sectional view taken on the line |8|8 of Fig. 14 but with the handle completely pressed down.

Referring now to the drawing, I3 designates a spring actuated type of tacker embodying the invention. The same comprises a body II comprising a pair of similar, symmetrically disposed parts I2 having meeting edges I4 along a longitudinal vertical plane through the middle of the body. The body is formed with a hand hole I5. It is open at the bottom and at its front end and at the forward portion of its upper end. Each of the body portions I2 has a side wall Hi from which extend inwardly, curved portions I! (Fig. 6) forming said hand hole I5. At the lower end of each of the side walls I6 is a longitudinal bottom edge l8. The side walls I6 have rear ends I9. The upper portion of the rear end of the said walls I 6 and the top portions thereof are curved as at 20 meeting along the meeting plane I4 (Fig. 6). At their forward ends (Fig. 5), side walls I6 are formed with vertical shoulders 2| from which extend forwardly side walls 22 spaced further apart than side walls I6.

The side walls 22 have forward edges 23 (Fig. 5). The shoulder 2| (Fig. 2) has an intermediate semi-circular shoulder portion 2 Id. At the axis of shoulder portions 2|, side walls 22 are formed with aligned through-openings 24. The wall portions 20 are upwardly curved as at 28a at their forward ends. Extending from the upper ends of walls 20a are forwardly and upwardly inclined edges 25 merging with a downwardly curved edge 23 from which extend downwardly and forwardly, inclined edges 21. The edges 21 extend down to the'forward edges 23. Forward edges 23 are formed with longitudinal grooves 23a (Fig. 1) for the purpose hereinafter appearing. The side wall portions 22 are formed adjacent the curved edges 26 with aligned through-openings 28.

The side walls 22 of the body I are formed adjacent their forward edges 23 with square shaped notches 33 (Fig. 12) spaced above the lower edges of said side walls. Said side Walls 4 22 are also formed rearwardly of the notches 30 with square shaped openings 3| aligned with said notches. Said side walls 22 are also formed adjacent the upper ends thereof with rectangular through-slots 3Ia, for the purpose hereinafter appearing.

Fitted over the front of the body is a front nose piece 32. Nose piece 32 may be made of hardened steel. It comprises a front wall 33 (Figs. 3 and 5) from which extend rearwardly parallel side walls or flanges 34. The front wall 33 has a bottom edge 35 aligned with the bottom edge I8 of the body. The side walls 34 have bottom edges 36 in the same plane as edges I8 and 35. The front wall 33 has a forwardly pressed substantially rectangular portion 38 for the purpose hereinafter appearing. Furthermore, said wall 33 is formed below the forwardly spaced portion 38 with a pair of parallel horizontally aligned vertical slots 39 (Fig. 5).

At the upper end of the front wall 33 is an upwardly and rearwardly inclined wall 40 contacting the inclined edges 21' of the sides I2 of the body H and extending about half way up said edges. Said side walls or flanges 34 contact the outer surfaces of the side walls 22 of the body. Side walls 34 are formed at their rear ends with rear edges 4| extending upwardly from the lower edges 35. The rear edges 4| extend substantially from the lower ends of the semi-circular shoulder portion 2m. Extending from edges 4| are edges 42 following the semi-circular shoulder potrions 2m. Extending downwardly and forwardly of the semi-circular edges 42 are inclined edges 43 terminating adjacent the rear ends of the bottoms of the openings 3|. Extending forwardly from the edges 43 are edges 44 at the level of the lower sides of the openings 3|. Extending upwardly from the front ends of edges 44 are vertical edges 45 in alignment with the front edges of said openings 3|. Extending from the upper ends of edges 45 are rearwardly inclined edges 48 from which extend edges 47 located around and spaced from the openings 28. Edges 47 extend down to the upper ends of the front wall 33. The upper ends of the side walls 34 thus comprise ears 48 and they are formed with openings 49 registering with the openings 28 in the side wall portions 22.

Extending through the registering openings 28, 49 is a shaft 50 riveted at its ends as shown in Fig. 4 of the drawing. The portion of the side walls 34 bounded by edges 42, 43 comprises ears 5| formed with through openings 52 registering with the openings 24 and the side wall portions 22. Extending through registering openings 24, 52 is a bolt 53. Bolt 53 has a head 54 at one end and a threaded portion 54a at its other end on which is screwed a nut 55a. Bolt 53 is removable, for the purpose hereinafter appearing.

It will now be understood that shaft 50 and bolt 53 serve to attach nose piece 32 to the front of the body.

Mounted on the body I is a bottom stop member 55. Said bottom stop member 55 is a metal plate and may be hardened. It is in horizontal position as shown in Figs. 1, 2 and 6. It has at its rear end wing extensions 56 passing through openings 3| of the body side walls, and resting on the lower edges of said openings and also on the edges 44 of the side walls 34 of the nose member. Said wing extensions 56 contact the lower ends of the rear edges 45. The stop member 55 also has adjacent its front end, side extensions 5'! which pass through notches 30 of the side walls 22 of the body member and rest on the lower edges of said notches. Said stop plate is formed adjacent its front edge with a, central shallow slot 58 forming a passage, for the purpose hereinafter appearing.

Attached onto the top surface of the bottom stop 55 is a shock absorber of the same shape as member 55 and overlying the same and made of either rubber, plastic or any other suitable material to absorb shocks, and having a slot 58a similar to slot 58 and registering therewith.

Mounted on and between wall portions 22 is a top stop 6] having side extensions 62 received within the slots 3| a (see Fig. 7). Top stop 6| is formed with a central opening 52a and with a plurality of downwardly pressed lips 63 arranged in a circle, for the purpose hereinafter appearing. Top stop 6: .is disposed above the bottom stop 55 and its shock absorber 60.

Slida'bly mounted within the front of the body and between side Walls 22 (Fig. 1) and adjacent the front wall of the nose piece 32, is a plunger member 65. The same comprises a plunger cup 06 made of a single sheet of metal, die cut and pressed to the shape shown in the drawing. The

cup 66 has a front wall 5'! from which extends rearwardly a wall 68. Extending upwardly from the rear of wall 03 is a rear wall 69. Extending rearwardly from the front wall ti are side walls I0. The side walls F6 are formed with rearwardly extending hooks 'lda having upwardly and rear wardly inclined under edges 7% located substantially midway between the front and rear ends of said side walls. Extending inwardly from the lower ends of said side walls 10 are flanges II (Fig. 4) contacting the underside of bottom wall 68.

""It will be noted that the cup is open at its upper end. Inserted within the cup and contacting the bottom wall 60 is the lower end of a coil compression spring t2, the upper end of which contacts the underside of the top stop 6|. The downwardly pressed lips 03 are received within the upper end of spring 12. Riveted to the front wall 6? as by rivet i3 is a driver blade I4 passing through the registering slots 58 and 58a in the bottom stop 55 and the shock absorber 60, respectively. The head of the rivet I3 may be moved through the recess formed by the forwardly pressed wall 38.

The front wall 6'! has a forwardly pressed lip l5 contacting the upper edge of the blade It. Also the front wall 5? has side extensions I'I received within the groove 23a and contacting the rear surface of the front wall 33. It will now be understood that the compression spring I2 presses the plunger downwardly. The driver blade i l passes down to the lower edge of the front wall 33. I Within the bottom of the body is .a staple magazine I8 of any suitable construction. However, said staple magazine '58 has side walls i9 (Fig. 5) formed at its front end with lugs projecting through the slots 39 so that the hardened nose piece 32 aids in supporting the front end of the magazine. The staple magazine is ishinged at its rear end with a pivot pin 3! passing through registering openings in the body II. When the bolt 53 is removed, the nose piece J2 may be swung forwardly and the staple magazine may then be swung downwardly about its pivot pin at for servicing or cleaning out the tacker.

Means is provided for raising and releasing the plunger $5 to drive a staple from the magazine. To this end there is pivoted on the shaft 50 a handle -Handle' 85 has a top wall 06 from which extend side. flanges B1. Said "flanges 87 are formed with through openings '88 through which the shaft 50 passes. The said side flanges Bl fit over the side walls 34 of the front nose piece. The top wall 86 has a forwardly and-downwardly inclined extension 89 contacting the inclined edges 21 of the side walls 22 of the frame member. The lower end of flange 89 substantially meets the upper end of flange 40. On shaft 50 and within the body is a torsion spring 9|, one arm of which contacts the underside of the top wall of the handle'and the other arm or which engages the back of top stop 6|. Thus the'torsion spring 9I tends to raise the handle.

Attached to the underside of the handle, rearwardly of the shaft 50, is a saddle 92 formed with a pair of downwardly extending apertured flanges 93 carrying a transverse pivot pin 94. Pivoted to the pivot pin94 and disposed within the flanges 93 is a link 35. Link 95 has a pair of side walls 95 interconnected by a rear web 97. The lower ends of side walls -96 carry a transverse pivot pin 98. Side walls It of the body members II are formed with aligned openings carrying a transverse pivot pin 100 disposed below and forwardly of the pivot pin 58.

Pivoted to the pivot pin I00 is a lever l0]. Lever Iii-i comprises side flanges I02 interconnested by a bottom web I03. Side walls I02 have upwardly and rearwardly extending arms formed with openings through which the pivot pin 53 passes. Said side walls I02 also have downwardly and forwardly inclined arms carrying a transverse pivot pin I05. Pivoted to the point pin I05 is the upper end of link I06. Link I06 has'side walls I07 interconnected by front web I08. On the pivot pin I05 is a torsion spring I09 having one arm engaging the front edge of the web I03 and a second arm contacting the back of'the web I08. Thus torsion spring I09 tends to swing the link I06 forwardly.

The side walls I 6 of the body members It are formed with aligned through-openings Iiia through which pass a transverse pivot pin I I0.

Pivoted on the pivot pin H0 is a triger member III. Trigger member III ha side walls H2 interconnected by a bottom web II3. Side walls I I2 are formed adjacent their rear ends with kid-- ney shaped openings I I4 through which pivot pin H0 passes. These kidney shaped openings H4 are somewhat elongated but have a notch II 5 at their rear lower ends, for the purpose hereinafter appearing. The side walls H2 are in alignment with the side walls 10 of the plunger'65. Said side walls II 2 have at their forward ends upwardly projecting pointed portions II 6 engaging under edges 70?) of the hook 10a. Said side walls H2 are formed with aligned through openings I20 (Fig. 11) rearwardlyof the pointed portions H6 carrying a transverse pivot pin H9. The lower ends of the side walls 101 of thelinks IOBare formed with apertures Iilla through which the pivot pin passes.

It will be noted that the torsion spring I09 normally tends to press the triger I II forwardlyso that the pivot pin I I0 is located at the rear end of the slots lid and is engaged within the ofiset portions N5 of said slots.

When the handle 85 is in its normal "up" position and the plunger 05 rests on the shock absorber 60, the parts are in the position shown in Fig. 1 of the drawing. When it is desired to operate the device, the handle 85 is depressed causing the handle to swing downwardly about the shaft 50. Link '95 is then pushed downwardly'to rotate the lever I in a clockwise direction about the pivot pin I00 to raise the link I06 and thus swing the trigger III in a clockwise direction about the pivot pin IIO to raise the plunger 65. As the plunger is raised, the pointed ends of the trigger slide upwardly and rearwardly along the under edges 10b of the hooks 1011. At a predetermined point in the vertical movement of the plunger, the pointed ends II6 move beyond the hooks and permit the compressed spring 12 to cause the plunger to descend and at the same time the driver blade will push out the foremost staple in the staple magazine. As the plunger descends the hok 10a will move down below the pointed ends IIB. When the handle is released the trigger III will swing in a counterclockwise direction down with the upward movement of the handle.

The forward edges of the flanges II2 adjacent the pointed ends I I6 are curved or cammed downwardly and rearwardly as at I I1. As the cammed edges I I! contact the downwardly and forwardly curved or cammed edges I I 8 of the hooks 10b (see Fig. 3), the trigger II I is pushed rearwardly against the tension of the torsion spring I09 so that the triger will by-pass the hooks 10a. During such movement the shaft of the pivot pin I I0 will move out of the offset portion I I of the kidney shaped slot II4.

Elongation of the slot II4 permits the trigger to move back. However, as soon as the pointed end I I6 passes below the hook a, torsion spring I09 will again snap the triger forwardly and the pivot pin II! will again snap into the offset portions I I5 of the slots I I4 and then the tacker will again be in the position shown in Fig. 1.

It will now be understood that the wing extensions 55 of the bottom stop resting on the edges 44 of the hardened front nose piece will permit said nose piece to take the shock caused when the plunger abruptly strikes the bottom stop. It will be noted furthermore, that the links and levers are relatively short so that they will withstand the strain of the operation. The lever is such that a small handle movement will per- I er I0 except for the differences noted hereinv after.

1 The tacker I0a comprises a body II, similar to the body II shown in Figs. 1 to 13. At the front of the body I I is a nose piece I30 having a front wall I 3| and side flanges I32 receiving the side walls of the body II. The nose piece I30 may be hardened. The front wall I3 I is formed with slots 39a similar to slots 39 to receive forwardly extending lugs 80 on the side wall IS on staple magazine I8. Pivoted to the rear end of the staple magazine I8 on pivot pin I 33 is a latch I34 having a hook I35 engaging pivot pin BI. The pivot pin M is preferably in the form of a removable bolt.

It will now be understood that upon removing the bolt BI the staple magazine I8 as a whole may be slidably moved rearwardly to disengage the lugs 80 from the slots 39a and then the entire staple magazine may be withdrawn from the tacker without disturbing the remainder of the tacker.

- The side walls I32 01' the nose piece may be formed with rearwardly extending ears I38 formed with through openings I31 serving as bearings for the transverse pivot pin I00 on which is mounted the lever IOI. Since the nose piece is hardened, the apertured ears I36 provide a good long lasting bearing for the pivot pin I 00.

In the tacker Ifla the front wall I3I of the nose piece terminates at the upper end of the front edges of the side walls of the body II. The handle 85a is similar to the handle 85 except that the side flanges 81 thereof contact the outer surfaces of the side walls of the body II. Thus the pin passes through bearing openings in the side walls of the body and in the side flanges of the handle, and the side flanges of the nose piece do not extend up to said pivot pin 50.

The plunger and the plunger actuating mechanism of the tacker Inc, may be exactly similar to the plunger and plunger actuating mechanism of the tacker I0.

The handle 85a may be provided with a shock absorber I40. The shock absorber I40 comprises a rivet MI passing through an opening in the top wall of the handle and through an opening in the wall 92. Contacting the underside of wall 92 is a rectangular rubber-like pad. Contacting the underside of said pad is a rectangular steel plate I 44. The rivet I4I passes through registering openings in the pad I43 and plate I. The side edges of the plate I44 overlie the upper edges of the side walls of the body II so that when the handle is depressed, the plate I 44 will contact the top edges of the side walls of the body as shown in Fig. 18 to absorb the shock of depressing the handle.

It will thus be seen that there is provided a device in which the several objects of this invention are achieved and which is well adapted to meet the conditions of practical use.

' As various possible embodiments might be made of the above invention, and as various changes might be made in the embodiment above set forth, it is to be understood that all matter herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is:

1. A tacker comprising a body, a plunger mounted for sliding movement in the front end of the body, a handle mounted for pivotal movement on the body, a link pivoted at its upper end to depending means on the underside of the handle, a lever pivoted to the body and having a rearwardly extending arm pivoted to the lower end of the link, a second link pivoted at its upper end to a forwardly extending arm on said lever, a trigger pivoted at its rear end of the body, the lower end of the second link being pivoted to the trigger rearwardly of its forward end and forwardly of its pivot, said plunger being provided with hooks engageable by the forward end of the trigger upon pivotal movement of said lever.

2. The combination of claim 1, said trigger being formed with slotted openings to receive a pivot pin on the body to constitute said pivotal connection between the trigger and the body, and said slotted openings each having a downwardly extending offset adjacent its rear end to receive part of the pivot pin.

3. A stapler comprising a body having side walls and being open at its front, a front nose piece fitted over the front of the body and having a front wall contacting the front edges of said side walls, and said nose piece having side walls contacting the side walls of said body, said side walls of the body being formed with through openings, 2. bottom stop having wings passing through said through openings, means to attach the front nose piece to the body, and the side walls of the front nose piece having portions supi porting the undersides of said wings, a plunger mounted for sliding movement at the front end of the body, a handle mounted for pivotal movement on the body, said plunger being located above the bottom stop, spring means to depress said plunger into contact with the bottom stop, and means engageable with the plunger to raise said plunger upon pivotal movement of the handle, said last means including means to disengage the plunger when said plunger is raised to a pre i.

determined height, to allow said spring means to depress said plunger against said bottom stop.

4. A tacker comprising a body open at its front and bottom, a nose piece fitted over the front of the body, means to attach the nose piece to the 1:.

body, a staple magazine in the bottom, open end of the body, means to attach the rear end of the magazine to the rear end of the body, said staple magazine having at its front end a pair of forwardly extending lugs, and said nose piece being provided with a front wall formed with openings to receive said lugs to sup-port the front end of the staple magazine, a plunger mounted for movement in the front end of the body, and

means on the body to raise the plunger, and

means to depress the plunger for driving staples from the front end of the magazine.

5. A tacker comprising a body, mounted for sliding movement, a plunger in the front end of the body, a handle mounted for pivotal moveament on the body, a link pivoted at its upper end to depending means on the underside of the handle, a lever pivoted to the body and having a rearwardly extending arm pivoted to the lower end of the link, a second link pivoted at its upper end to a forwardly extending arm on said lever, a trigger pivoted at its rear end of the body, the lower end of the second link bein pivoted to the trigger rearwardly of its forward end and forwardly of its pivot, said plunger being provided with hooks engageable by the forward end of the trigger upon pivotal movement of said lever, upon pivotally moving the lever downwardly toward the body to raise the plunger, and said trigger being disengageable from said hooks upon raising the plunger to a predetermined height, spring means to depress said plunger when it is released, spring means to raise the lever, and interengaging means on said plunger and trigger to cam the trigger rearwardly when the trigger moves down so as to permit the trigger to bypass said hooks and the plunger.

6. The combination of claim 5, in combination with a torsion spring about the pivotal connection about the forwardly extending arm of the lever and the upper end of the second link, said torsion spring being arranged to move the lower end of the second link forwardly for pulling the trigger forwardly beneath said hooks after said trigger has by-passed said hooks.

7. The combination of claim 6, said trigger being formed with slotted openings to receive a pivot pin on the body to constitute said pivotal connection between the trigger and the body, and said slotted openings each having a downwardly extending oifset adjacent its rear end to receive part of the pivot pin.

8. A gun type tacker comprising a body open at its front end, said body being formed with a hand hole, a front cover attached to the front end of said body, a handle pivoted to said body by means of a pin passing through registering openings in said handle, body and cover, spring means about said pin to raise the handle, said handle being depressible by a hand holding the tacker with the fingers of the hand inserted into said hand hole, a plunger mounted for sliding movement at the front of the body, spring means to depress the plunger, a link pivoted at its upper end to depending means on the underside of the handle, a lever pivoted mediately th ends thereof to said body, said lever having a rearwardly extending arm pivoted to the lower end of said link, and said lever having a forwardly extending arm, a second link pivoted at its upper end to the forward end of said forwardly extending arm, a transverse pin fixed on said body forwardly of the hand hole, a trigger formed at its rear end with a slot through which said last pin passes, the lower end of the second link being pivoted to said trigger, the said trigger having mean at its front end engaging the plunger to lift the latter upon depressing the handle.

9. The combination of claim 8, in combination with a bottom stop below the plunger, said plunger being adapted to contact the bottom stop when depressed by the spring means which depresses the plunger, said bottom stop being formed with outwardly extending wings, said body having openings through which said wings pass and said front cover having portions engaging the undersides of said wings.

10. The combination of claim 9, in combination with a staple magazine, the bottom of the body being open, said magazine being located in the bottom open side of the body, means to attach the rear end of the magazine to the body, the front end of said magazine being provided with lug means, and said front nose piece being formed with openings to receive said lug means to support th front end of said staple magazine, and means to secure the front cover to the body at a point below the pivot pin which pivotally connects the handle to the body and cover.

11. A tacker comprising a body open at its front and bottom, a nose piece fitted over the front of the body, means to attach the nose piece to the body, a staple magazine in the bottom open end of the body, means to attach the rear end of the magazine to the rear end of the body, said staple magazin having at its front end a pair of forwardly extending lugs, and said nose piece being provided with a front wall formed with opening to receive said lugs to support the front end of the staple magazine, a plunger mounted for movement in the front end of the body, means on the body to raise the plunger, means to depress the plunger for driving staples from the front end of the magazine, a bottom stop for said plunger, said plunger being adapted to contact the bottom stop when depressed, said body having openings, said bottom stop having Wings passing through said openings, and said front cover having edges contacting the undersides of said wings.

12. A tacker comprising a body formed with a hand hole, a nose piece at the front end of the body, said body and nose piece having registering openings, a pivot pin passing through said registering openings, a lever on said pin, a handle pivoted to the body. a bracket attached to the 1 l underside of the handle, said lever having a rearwardly extending arm, a, link interconnecting said bracket with said rearwardly extending arm, a plunger mounted in the body for sliding movement, a trigger pivoted to the body, said lever having a forwardly extending arm, a link interconnecting said forwardly connecting arm of the lever with said trigger, said plunger being formed with a hook, and said trigger having means to engage the underside of the hook to slide the plunger upon pivotal movement of said handle.

13. A tacker comprising a body, a nose piece attached to the front of the body, said nose piece having a front wall formed with a slot, a staple magazine in the body, means to attach the rear end of the magazine to the body, said magazine having a lug at its front end projecting through the slot to support the front end of the magazine.

14. A tacker comprising a body, a handle pivoted to the body, a shock absorber attached to th underside of the handle and comprising a compressible pad, and a plate contacting the underside of the pad, means to rivet said pad and plate to said handle, and said body having edges disposed below the sides of said plate whereby upon depression of the handle the sides of the plate will contact said edges.

15. A tacker comprising a body, mounted for sliding movement, a, plunger in the front end of the body, a handl mounted for pivotal movement on the body, a link pivoted at its upper end to depending means on the underside of the handle, a lever pivoted to the body and having a rearwardly extending arm pivoted to the lower end of the link, a second link pivoted at its upper end to a forwardly extending arm on said lever, a trigger pivoted at its rear end of the body, the lower end of the second link being pivoted to the trigger rearwardly of its forward end and forwardly of its pivot, said plunger being provided with hooks engageable by the forward end of the trigger upon pivotal movement of said lever, a front nose piece mounted on the body, said front 12 nose piece being formed with apertured ears, and the same means for pivoting the lever to the body comprising a pivot pin passing through said apertured ears.

16. A gun type tacker comprising a body, said body being formed with a hand hole, a front cover attached to the front end of the body. a handle pivotedtosaid body, a. plunger mounted for sliding movement at the front of the body, a link, means including a pin to pivotally connect the upper end of the link to the underside of the handle, said front cover being formed with openings, a lever, a pivot pin at an intermediate portion of the lever journalled in said openings in said cover, said lever having a rearwardly extending arm pivoted to the lower end of the link, and said lever having a forwardly extending arm, a second link pivoted at its upper end to the forward end of said forwardly extending arm, a transverse pin fixed on the body forwardly of said hand hole, a trigger formed at its rear end with a slot through which said last pin passes, the lower end of the second link being pivoted to said trigger, said trigger having means at its front end engaging the plunger to lift the latter upon depressing the handle.

17. The combination of claim 16 in combination with a bottom stop below the plunger, spring means to depress said plunger downwardly into contact with said bottom stop, said front cover having portions engaging the undersides of said bottom stop to support the same.

MORRIS ABRAMS.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,300,277 Hansen Oct. 27, 1942 2,603,782 Spencer July 22, 1952 2,617,096 7 Boroughs Nov. 11, 1952 2,617,097 Spencer Nov. 11, 1952 

